Journal article
Carbohydrate Structure Characterization by Tandem Ion Mobility Mass Spectrometry (IMMS)2
Analytical chemistry (Washington), Vol.85(5), pp.2760-2769
03/05/2013
Handle:
https://hdl.handle.net/2376/115803
PMCID: PMC3633474
PMID: 23330948
Abstract
A high resolution ion mobility spectrometer was interfaced to a Synapt G2 high definition mass spectrometer (HDMS) to produce IMMS-IMMS analysis. The hybrid instrument contained an electro-spray ionization source, two ion gates, an ambient pressure linear ion mobility drift tube, a quadrupole mass filter, a traveling wave ion mobility spectrometer (TWIMS) and a time of flight mass spectrometer. The dual gate drift tube ion mobility spectrometer (DTIMS) could be used to acquire traditional IMS spectra, but also could selectively transfer specific mobility selected precursor ions to the Synapt G2 HDMS for mass filtration (quadrupole). The mobility and mass selected ions could then be introduced into a collision cell for fragmentation followed by mobility separation of the fragment ions with the traveling wave ion mobility spectrometer. These mobility separated fragment ions are finally mass analyzed using a time-of-flight mass spectrometer. This results in an IMMS-IMMS analysis and provides a method to evaluate the isomeric heterogeneity of precursor ions by both DTIMS and TWIMS, to acquire a mobility-selected and mass-filtered fragmentation pattern and to additionally obtain traveling wave ion mobility spectra of the corresponding product ions. This new IMMS
2
instrument enables the structural diversity of carbohydrates to be studied in greater detail. The physical separation of isomeric oligosaccharide mixtures was achieved by both DTIMS and TWIMS, with DTIMS demonstrating higher resolving power (70~80) than TWIMS (30~40). Mobility selected MS/MS spectra were obtained, and TWIMS evaluation of product ions showed that isomeric forms of fragment ions existed for identical
m/z
values.
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Details
- Title
- Carbohydrate Structure Characterization by Tandem Ion Mobility Mass Spectrometry (IMMS)2
- Creators
- Hongli Li - Department of Chemistry, Washington State University, Pullman, Washington, USBrad Bendiak - Department of Cell and Developmental Biology, Program in Structural Biology and Biophysics, University of Colorado, Health Sciences Center, Anschutz Medical Campus, Aurora, Colorado, USAWilliam F Siems - Department of Chemistry, Washington State University, Pullman, Washington, USDavid R Gang - Institute of Biological Chemistry, Washington State University, Pullman, Washington, USHerbert H Hill - Department of Chemistry, Washington State University, Pullman, Washington, US
- Publication Details
- Analytical chemistry (Washington), Vol.85(5), pp.2760-2769
- Academic Unit
- Chemistry, Department of; Biological Chemistry, Institute of
- Identifiers
- 99900548147001842
- Language
- English
- Resource Type
- Journal article